Legal due diligence in Poland — what should be checked before a transaction

Legal due diligence is a structured review of a company or asset before an investment, acquisition or major transaction. Its purpose is to identify legal risks early enough for parties to decide how to handle them — through price adjustment, warranties, indemnities, escrow, conditions precedent, transaction structure changes or withdrawal. For UK, US, Canadian and Australian investors entering Polish transactions, due diligence reveals Polish-specific risks (regulatory, tax, employment, real estate registry issues) often invisible from financial review alone.

→What this guide covers

1. 01Standard scope of legal DD
2. 02Polish-law specific issues
3. 03DD process and timing
4. 04Common red flags
5. 05Handling identified risks
6. 06Due diligence report
7. 07Costs and value

01.Standard scope of legal DD

Legal due diligence typically covers:

• Corporate documents — articles of association, shareholders' agreements, resolutions, share register, board minutes;
• Capitalisation — share ownership, options, convertibles, vesting schedules, ESOPs;
• Material contracts — customer, supplier, distribution, licensing agreements;
• Employment — contracts, collective agreements, key person dependencies, B2B contractor risks;
• Intellectual property — ownership, licences, registrations, infringement risks;
• Real estate — title, mortgages, easements, building permits;
• Regulatory — licences, permits, sector-specific compliance;
• Litigation — pending and threatened disputes;
• Tax — pending audits, transfer pricing, withholding tax exposure;
• Data protection — GDPR compliance, processing arrangements, breach history;
• Public-law matters — environmental, labour inspections, customs;
• Sanctions and compliance — sanctions exposure, AML, anti-corruption;
• Financing — loans, security interests, financial covenants.

Scope tailored to transaction: early-stage venture investment focuses on corporate cleanliness and IP; M&A due diligence covers all areas; asset deals focus on specific asset categories.

02.Polish-law specific issues

Issues frequently identified in Polish DD that surprise foreign acquirers:

• B2B contractor reclassification risk — Polish authorities increasingly challenge contractor status; reclassification creates retroactive social security and tax liabilities;
• Real estate registry discrepancies — KW (Land and Mortgage Register) entries sometimes don't match actual title; investigations time-consuming;
• Old building permit issues — buildings may have informal modifications without permits, creating future enforcement risk;
• Employee inventions and IP — Polish Copyright Act has specific rules on employee IP that differ from common law presumptions;
• Past tax positions — VAT classifications, transfer pricing documentation, withholding tax on cross-border services;
• Environmental burden on real estate — historical industrial use can create cleanup obligations;
• Public funding compliance — EU funded projects have ongoing compliance obligations transferring with company;
• FDI screening applicability — strategic sectors require approval before transaction completion;
• UOKiK competition law — merger thresholds may require notification.

03.DD process and timing

Typical due diligence process:

1. NDA and engagement — confidentiality agreement, scope definition;
2. Information request list — comprehensive document list provided to seller;
3. Data room setup — virtual data room (VDR) for document access;
4. Document review — typically 2–6 weeks for standard transactions;
5. Q&A process — written questions to seller's counsel;
6. Site visits and interviews — for operational understanding;
7. Specialist input — IP, environmental, regulatory specialists where relevant;
8. DD report — structured findings with risk assessment;
9. Negotiation input — DD findings feed into SPA terms.

Timeline varies: small acquisitions (target <5M PLN) — 2–4 weeks; medium (5–50M PLN) — 4–8 weeks; large transactions — 8–16 weeks. Vendor due diligence (commissioned by seller) increasingly common — adds 4–8 weeks at start but compresses subsequent buyer DD.

04.Common red flags

Findings that often impact transaction terms or kill deals:

• Undisclosed litigation — pending or threatened claims with material exposure;
• IP ownership gaps — key software/products developed by contractors without proper IP assignment;
• Major contract change-of-control clauses — customer/supplier contracts terminate on acquisition;
• Tax irregularities — undocumented related-party transactions, aggressive VAT positions;
• Employee misclassification — large B2B contractor pool with reclassification risk;
• Environmental contamination — historical industrial use without remediation;
• Real estate title defects — unclear ownership chain, missing permits, encumbrances;
• Regulatory non-compliance — missing licences, GDPR violations, AML failures;
• Dependency on key persons — without proper contractual protection (non-compete, lock-up);
• Funding clawback risks — EU funding conditions not met but company still receiving payments.

05.Handling identified risks

Not every issue blocks transaction. Standard risk responses:

• Pre-closing fix — seller required to remedy before closing (e.g. obtaining missing licence);
• Specific warranty — seller warrants specific facts; breach triggers indemnification;
• Indemnification — seller indemnifies buyer for specific risks; typically capped at percentage of price;
• Escrow — portion of price held by escrow agent for warranty period;
• Price adjustment — reduction reflecting risk;
• Earn-out — payment contingent on future performance;
• Conditions precedent — closing conditional on specific events;
• Restructuring — asset deal instead of share deal to leave problems with seller;
• Insurance — representations and warranties insurance for major risks;
• Walk away — for fundamental issues without acceptable solution.

06.Due diligence report

Final DD report should be practical, not just descriptive:

• Executive summary — key findings and risk rating;
• Red flags — issues requiring decision before closing;
• Material risks — significant items affecting transaction terms;
• Standard issues — manageable items for warranty/indemnity coverage;
• Recommendations — specific transaction provisions to address each risk;
• Open items — areas requiring further investigation or seller clarification;
• Detailed findings — full review by area for reference.

Report quality varies enormously between law firms. Practical reports identify specific contract clauses (warranty wording, indemnity scope, escrow amounts) rather than generic risk descriptions. Cross-border transactions benefit from coordinated reports addressing both jurisdictions' issues.

07.Costs and value

DD costs vary with target size and complexity:

• Small acquisitions (<5M PLN) — 15,000–40,000 PLN;
• Mid-size (5–50M PLN) — 40,000–150,000 PLN;
• Large transactions — 150,000–500,000+ PLN;
• Limited DD (red-flag review only) — 50% of full DD cost;
• Vendor DD — typically 60–80% of comparable buyer DD cost.

Specialist input adds: tax DD 30–50% of legal DD; environmental DD 20–40%; regulatory specialist (financial services, pharma, energy) varies widely. Total transaction legal investment typically 1–3% of deal value for mid-size, declining percentage for larger deals.

Value of DD: identifies risks worth multiples of DD cost; provides basis for warranty negotiation; supports financing requirements; creates audit trail for fiduciary duties of acquirer's board.

FAQFrequently asked questions

∎Summary and next steps

Legal due diligence in Polish transactions identifies risks invisible from financial review alone — particularly Polish-specific issues like B2B contractor classification, real estate registry discrepancies, FDI screening applicability and EU funding compliance. Costs typically 0.5–3% of deal value but identify risks worth multiples of investment. Vendor DD increasingly common; combined with buyer's confirmatory DD provides comprehensive coverage. Final report should be practical with specific transaction provisions addressing each identified risk.